The AirTAC Airtac SCJ40 Standard Cylinder SCJ40X275-10S is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 10 mm range without swapping the cylinder. Ø40mm bore, 275mm nominal stroke, PT1/4 ports and adjustable end cushioning.
The SCJ40X275-10S is a double-acting, single-rod pneumatic cylinder with a rear-cap adjusting screw that lets you fine-tune the stroke end by up to 10 mm. With a 40 mm bore and 16 mm rod, it delivers 628 N of push force at 0.5 MPa, making it a solid choice for light clamping, ejection, and diverting tasks where the final stop position needs to be dialled in during commissioning.
A built-in magnet (the -S suffix) allows CMSG/DMSG/EMSG sensors to clamp directly onto the tie-rod barrel for non-contact end-of-stroke sensing. The body length A(SCJ) is 185 mm, and the adjustable cushion decelerates the piston smoothly. The 275 mm nominal stroke is well within the 1200 mm maximum for this bore, so it ships as a standard-length unit.
| Model | Airtac SCJ40 Standard Cylinder SCJ40X275-10S |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø40 mm |
| Nominal stroke | 275 mm |
| Stroke adjustment | Up to 10 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SCJ (adjustable-stroke) datasheet. The rear adjusting screw sets the stroke end position; force is the same as the equivalent single-rod SC bore. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
SCJ is single-rod, so force matches the equivalent SC bore: push uses the full bore area, pull subtracts the rod area. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×275 | Nominal (maximum) stroke length in mm. |
| -10 | Adjustable-stroke range in mm (options 10/20/30/40/50/75/100). |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod, fixed stroke), SCD (double rod), SCT (multi-position). SCJ mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
The 10 mm rear screw lets technicians adjust the end stop precisely during machine setup without swapping cylinders or machining hard stops.
628 N of push force is ample for diverting small packages or components on a conveyor. The adjustable stroke allows quick changes for different product widths.
The built-in magnet enables CMSG/DMSG sensors to confirm clamp position, while the adjustable stroke lets you set the exact clamp depth for delicate assemblies.
Step up to a 50 mm bore (982 N push at 0.5 MPa) if the 628 N force of this 40 mm unit is marginal for your load. If you never need to alter the stroke after installation, the fixed-stroke SC40X275 is a simpler, cost-effective alternative. For a direct replacement, match the 40 mm bore, 275 mm nominal stroke, 10 mm adjust range, PT port thread, basic mounting, and the -S magnet option.
At 275 mm of stroke, the rod is extended significantly. If the load applies any side force, add an external guide rail or switch to a guided cylinder to prevent rod bending and premature seal wear.
Adjustable-stroke checklist
At 0.5 MPa, it produces 628 N pushing and 528 N pulling. The push force is higher because the single rod reduces the piston area on the pull side. At the maximum operating pressure of 1.0 MPa, theoretical push force reaches 1280 N.
Yes, if you need field adjustability. Ensure the nominal stroke (275 mm), port thread (PT), and magnet option (-S) match your existing setup. The SCJ body is slightly longer than the fixed-stroke SC to accommodate the rear adjusting screw mechanism.
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